Ore-reducing furnace.



P. B. PETERSON. ORE REDUCING FURNACE.

APPLICATION FILED MAY 10, 1912.

1,051,512. Patented Jan.28,1913.

3 SHEBTSSHEET 1.

Z W 13 & MM

P. E. PETERSON.

ORE REDUCING FURNACE.

APPLICATION FILED MAY 10, 1912.

Patented J an. 28, 1913.

3 SHEETSFSHEET Z.

jllfrcesses Z 72 U 71207"; J e/671E 06 21 /6/ 6011 3 SHEETSSHEET 3.

P. E. PETER om: REDUCING F GE.

APPLICATION FILED MAY 10I 1912.

Patented Jan. 28, 1913.

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more era esn n eneern FFICE.

PETER EVE-RT YETIEBSQE, Q2 BUTTE, IEGNTAEIA.

FURNACE.

Specification or letters Fatent.

'Patented Jan. 28, 1913.

Application filed May 10,1912. Serial fie. 896,491.

bow and State of Montana, have invented.

certain new and useful Improvements in Ore-Reducing Furnaces, of whichthe fol: lowing is a specification.

My present invention pertains to an im- 'proved furnace for thereduction of ores, and more particularly for the reduction of Zinc ores,one embodiment thereotbeing illustrated in the annexed drawings,wherein:

Figure 1 is a perspective view of the furnace; Fig. 2 a longitudinalsectional view; Fig. 3 a transverse vertical sectional view, taken on?the line lil lll of Fig. 2; and 4- a similar "iew on the line lv lV.Theniain object of my invention is to construct an apparatus which willcondense the vapors, so as to produce pure metal, means being providedwhereby theflow of the cooling medium (air) about the contnbes may soregulated as to ac complisb the desired result. Thus, for instance, inthe treatment of zinc ores, the condenser will act upon the vapors so toproduce metallic Zinc, and. prevent the formation ofjiilue powder orzinc dust.

Stated broadly, the condenser may be said to comprise a series ofcondensing duets througln which the vapor passes, combined with meansfor causing a current of air to be" passed about and around the same,the ".ir and vapor pa g in the same generai hottest portion of the.cooling medium a' temperature. the garter LlOn of movethe vaportl'irough the condenser i t or add be ci ing chamber, the hat spe termodify b Misting the action of the condcn A simple and etiectivearrangement of an i apparatus for carrying out my invention illustratedin the annexed drawings, where-- 1 denotes the smelting retort in whichthe material under treatment is vaporized electric current passingbetween the tIOtlQ 2 situated in the. base of the retozt and anelectrode extending (.lllOllfi' cover-block 1-. Electrode is made he;and material is preferably introd med therethrough. It is to heunderstood that any downward toward-the speltenoola form of heatingapparatus may be employed, that shown being merely illustrative.

The condenser is located to one side of the retort, the uppervapor-receiving cham-. ber opening at one end, at G, into the upperportion of the retort. Said chamber is in communication with the 'upperends of the condensing tubes 7, which extend down- "wardly and open intothe spelter-receiving chamber 8. The tubes pass through a windbotr orchest 9, the exterior of the tubes being exposed. throughoutsubstantially their entire lengtl ()penings 10 are formed in the upperportion of the chest upon each side thereof, and air trunks ii and l1.are in communication therewith, air being supplied to said trunks fromblower-or blowers. Vents 12 are formed in the lower portion-f the box orchest through which. the air may escape. Suitable dampers, as 13, willbe provided for controlling the flow of air through the box or chest.

The fumes and such vapors as are not condensed, pass from the spelterchamber 8 through ports oropeningsl l, into ducts 15, through which theyare carried away.

The spelter may be withdrawn from the. speliencollecting and receivingchamber through a tap opening 16, while access may be had to the tubesand chamber through openings formed in the top and end wall of thecondenser, which openings will be closed by suitable cliiisures 17. and18.- Any desired to rm of clean-out door may be provided for if;ci'iamber Q.

"ilhile the tubes h e been shown as oceu yin a vertical post ion, it isnot essential that they should he so arranged; they may inc and so longas they extend hey may he said to fall within is present invention. o'')era .ion the vapors pass from the reinto the upper chamber 5, thencepass downwardly through the tubes, air at the same time being forcedinto the air-box, entering the upper part through openings andiiligilfifliig directly upon the upper porins oi the tubes, which partsare the hotthe vapors while in their hottest nought intocontact withthat por- -ie tubes which are subjected to the The apors pass downwardlylie tubes and the cooling air likewise iownwardly in contact with theouter The temperature of portions of the tubes, finally passing out ofthe trunk or chest through openings 12. the tubes is thereby regulatedand controlled so that the vapors are condensed and the spelter ormetallic zinc gathers in the spelter chamber 8, from whence it iswithdrawn from time to time. The cooling medium and the vapors thustravel in the same general direction, an arrangement which has provenhighly effective. The collection of the hot spelter in the chamberbeneath the discharge end of the tubes likewise assist in the properoperation of the condenser.

Having thus described my invention, what I claim is:

1. In a condenser, the combination of a plurality of passages incommunication with the exit of a retort, said passages extending in adownward direction; and means forapplying a cooling medium to theexterior of sad passages, said medium passing in the same generaldirectlon about said passages as" the vapors which pass therethrough,whereby the hottest portion of the passages will be subjected to thecooling medium while the latter is at its lowest temperature. v

2. A condenser, comprising in combination a chamber opening into theupper portion of a retort and adapted to receive vaors therefrom; aplurality of tubes extendmg downwardly from said chamber; a spelterchamber located beneath said tubes; and means forcausing a current of,air to flow around said tubes in a downward di rec tion, whereby theupper portion of the tubes into which the hot vapors are introduced willbe subjected to the influence of the 0001'- est air. I

3. A condenser, comprising in combination a chamber in communicationwith a retort and adapted to receive the vapors passing therefrom; anair-box or chest located be low said chamber; a series of tubesextending downwardly from said chamber and throng the chest; aspelter-receiving chamber located beneath said tubes and into. whichthey discharge; means for forcing air into the upper portion of thechest and into contact with the upper portion of-the tubes; exitopenings located in the lower portion of said chest through which the8.11 may escape; and fume conduits extending from the spelter-reoeivingchamber. 4:- A condenser, comprising in combination adownwardly-extending passage or conduit 'communicatin at its upper endwith a retort from Wlich it receives the vapors to be condensed; aspelter chamber into which said conduit discharges; and means forapplying a cooling medium to the exterior of said conduit, said mediumwhile coolest first contacting with the uppermost portion .of theconduit and thence passing in the same general direction 'about theexterior of said conduit as the vapors take in passing through saidconduit.

In testimony whereof I have name tothis specification in the twosubscribing witnesses.

PETER EVERT PETERSON. Witnesses:

WALTER E. ELLSWORTH, EDWARD B. HOWELL.

signed my presence of

